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JEE Mains · Chemistry · STD 11 - 3. Classification of elements and periodicity in properties

\(Na, \;\mathrm{Mg}, \mathrm{Al}\) અને \(Si\)ની  પ્રથમ આયનીકરણ ઉર્જા (\(\mathrm{kJ} / \mathrm{mol}\) માં)  અનુક્રમે શું હશે?

  1. A \(496,737,577,786\)
  2. B \(786,737,577,496\)
  3. C \(496,577,737,786\)
  4. D \(496,577,786,737\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(496,737,577,786\)

Step-by-step Solution

Detailed explanation

Elecronic configuration of \(\mathrm{Na}=[\mathrm{Ne}] 3 \mathrm{s}^{1}\) \({\mathrm{Mg}=[\mathrm{Ne}] 3 \mathrm{s}^{2}}\) \({\mathrm{Al}=[\mathrm{Ne}] 3 \mathrm{s}^{2} 3 \mathrm{p}^{1}}\) So order of first ionisation energy is…
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